Enzymes are generally too large to be absorbed orally and would likely be degraded before absorption if it were possible. For some conditions, like cystic fibrosis, enzymes are supplemented orally because they are for digestion and do not need to leave the GI tract.
In this case, the drug is administered intravenously, but some large molecules can also be given intramuscularly or subcutaneously.
frostymoose t1_ivs5f3l wrote
Reply to comment by cowlinator in In a first, doctors treat fatal genetic disease before birth by 29PiecesOfSilver
Enzymes are generally too large to be absorbed orally and would likely be degraded before absorption if it were possible. For some conditions, like cystic fibrosis, enzymes are supplemented orally because they are for digestion and do not need to leave the GI tract.
In this case, the drug is administered intravenously, but some large molecules can also be given intramuscularly or subcutaneously.